Module model_checkpoint 

2026-09-30: The model source over the checkpoint itself: config.json (and the sidecar hf_quant_config.json) resolved by crate::resolve_checkpoint at the declared formats, with the serving policy derived from the checkpoint and the engine’s stated defaults. A recipe request goes to the recipe’s golden instance (InstancesSource), whose formats are the recipe’s.

Owner: metrale-circuit (hardware). Invariants:

• Every derived setting names where its value comes from (POLICY_SOURCES); the class’s [defaults] settings are placeholders here and are always re-read from the device’s class (super::model::policy_on_class).
• A checkpoint the model axis refuses is refused here with its reason, never planned from a guess.

Structs

CheckpointSource

2026-09-30: The source over checkpoints, falling back to the recipes for recipe formats.

Constants

KERNEL_QUANT

2026-09-30: The kernel quant axis every target is built for: the build compiles METRALE_TARGET_QUANT=nvfp4 unless told otherwise, and the FP8 35B-A3B golden instance targets gb10/qwen3.6-35b-a3b/nvfp4 too.

POLICY_SOURCES

2026-09-30: Where each derived setting comes from, printed in the report.

Functions

derive_policy

2026-09-30: The serving policy of a checkpoint-derived circuit (POLICY_SOURCES).